* Statistics Canada does not recommend comparing results from the voluntary 2011 NHS data to the 2006 long-form census data due to a change in survey methodology. It is not possible to determine whether differences are due to actual changes in the population or due to the voluntary nature of the NHS, which is more prone to non-response bias (i.e. residents with low incomes, very high incomes, new immigrants, and Aboriginals were less likely to respond). For more information please see the NHS User Guide (external PDF file)

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